The antagonist to the gastroc and soleus muscles is a combination of muscles, primarily the tibialis anterior and fibularis (peroneus) tertius.

gastroc and hamstring

calf

Probably referring to the gastrocnemius muscle, which along with the soleus, comprises the calf.

The antagonist to the gastroc and soleus muscles is a combination of muscles, primarily the tibialis anterior and fibularis (peroneus) tertius.

When you run suicides many parts of your body are at work:

-Cardiovascular system (heart and lungs to provide blood and oxygen to your muscle cells that need those nutrients)

-Legs (hip flexors/extensors, quadriceps, hamstings, calves [gastroc and soleus], anterior tibialis and peroneals to name a few)

-Arms to reach the ground

-Abdominal and back muscles to provide core stability

control of gastroc secretion is divided to cephalic phase, gastric phase and intestinal phase. Among these, intestinal phase means gastric secretion in stomach as a result of stimulation in intestine by food. when the food reaches the intestine it secrete gastrin and the hormone transports to stomach by circulation. amount of secretion in intestinal phase is smaller and slower than that of cephalic and gastric phase. by the way if substance like acid, lipid or any high osmotic solution entered intestine, duodenum, gastric secretion decreases this time. This is because of enterogastrone released from duodenum. there are also other hormones such as cholecystokinin and gastric inhibitory peptide. they inhibit the secretion in stomach.

From my days in high school biology and care and prevention of athletic injuries, I seem to remember the muscle fibers being split into two distinct groups.

1. Slow twitch muscle fibers, such as certain portions of the quadraceps, biceps, gastrocnemius (calves), etc. These fibers are geared towards long, sustained contraction such as would be used in a power squat or biceps curl.

2. Fast twitch muscle fibers, such as particular portions of the gastroc's (calves) and minor areas of the quadriceps and chest. These fibers are responsible for explosive actions such as expolidng off the starting line, clearing a high jump, or a well placed jab.

Hope this is what you were looking for.

Fibularis Longus and Fibularis Brevis are both Plantar Flexes, page 222 of the Human Anatomy & Physiology Lab Manual (Elaine N. Marieb and Susan J. Mitchell.

The prime movers for plantar flexion are the gastrocnemius and soleus (known together as the triceps surae). The gastrocnemius is the larger of the two muscles and is the one visible if you "flex" the calf by lifting your heel off the ground and putting pressure on the front of the foot.